Answer:
A. Profit margin
D. Total asset turnover
Explanation:
Profit margin is a measure of a company's operating efficiency because it measures what percentage of sales revenue actually turns into profit after making all the corresponding deductions (operating expenses, interest expenses, tax expenses).
A high profit margin means that the company is efficient in obtaining profits from its main operating activity.
Total asset turnover is also a measure of a company's operating efficiency because it establishes the amount of sales revenue as a percentage of the company's total assets. In other words, it measures how good the company is in turning its assets into revenue.
